她渴望旅行。
Scratch my back – I've got an itch.
给我挠挠背–我痒痒。
When someone has hay fever, the eyes and nose will stream and itch.
当一个人染上花粉热时，会流眼泪、流鼻涕，还会感到眼睛和鼻子发痒。
How does it feel to scratch an itch?
抓痒是一种什么样的感觉？
In a common itch like a mosquito bite, cells in the skin release a chemical called histamine.
在常见的瘙痒中，比如蚊虫叮咬，皮肤细胞会释放一种叫做组胺的化学物质。
我浑身痒。
Scratching by itself—that is, in the absence of an itch—had no such effect.
抓挠本身——即不养时——并无这样的效果。
WASHINGTON - Got an itch to scratch?
华盛顿——痒了为什么要挠挠？
沥青使我发痒。
拿普通的痒来说吧。
When you want to scream and yell, instead ITCH.
当你想要大喊大叫的时候，用渴望来替代。
Indeed, pain and itch have been difficult to separate.
实际上，疼痛和瘙痒一直以来都很难分开。
Every dog and cat knows that scratching relieves an itch.
猫猫狗狗都知道抓挠可以止痒。
But if the itch does spread in the skin after he is pronounced clean.
但他得洁净以后，头疥若在皮上发散开了。
Now that you've done that, you've probably got an itch to install new apps.
既然已经尝试了一下，你大概已经忍不信手痒想要安装新软件了吧。
This isn't the only itch pathway to the brain, stressed Wake Forest's Yosipovitch.
这并不是唯一通往大脑的瘙痒神经通路，威克森林大学Yosipovitch教授强调说。
In fact, I see people getting the career-change itch about once every ten years.
事实上，我注意到，人们患上十年一次的‘转行之痒’。
When the fungus that causes jock itch targets the feet, you have athlete’s foot.
当引发你股癣的真菌感染你的双脚时，你就会得脚气。
An idea is like an itch: you need to scratch it, and when you do it feels better.
头脑里出现的想法就好像是被蚊虫叮了一样：您需要抓痒痒，这样做才感觉舒服一些。
Scientists have pinpointed a key group of cells that sends itch-alerts to the brain.
科学家们已经明确找到将抓痒提醒信号传输到大脑的一组关键细胞。
But couples who manage to survive the seven-year itch would be wise not to get complacent.
但成功度过“七年之痒”的夫妇不要沾沾自喜。
Neff gives the following examples: “itch in left foot, ” “excitement, ” “plane flying overhead.”
内夫举了几个例子，如“左脚发痒”，“兴奋”，“飞机在高空飞翔”。
But they could still sense and avoid pain, showing that itch and pain are processed independently.
但是，它们仍然能感受并避免疼痛，这表明老鼠的神经系统是分别处理痒和疼痛的。
But they could still sense and avoid pain, showing that itch and pain are processed independently.
但是，它们仍然能感受并避免疼痛，这表明老鼠的神经系统是分别处理痒和疼痛的。
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